Furnace-arch construction



April 3, 1929. E. P. STEVENS 1,710,247

I FURNACE ARCH CONSTRUCTION Filed May 22. 1922 WITNESS Patented Apr. 23, 1929.

UNITED STATES ENOGH P. STEVENS, OF CHICAGO, ILLINOIS;

MARY ANN STEVENS EXECUTRIX F SAID ENOGH 1?. STEVENS, DECEASED.

FURNACE-ARCH Application filed May 22,

This invention relates to arches for fur: naces and particularly to arches,'the bricks of which are laid in courses.

()ne of the primary objects of my inven- 5 tion is to provide a simple and effective means for supporting the courses of brick, with freedom for expansion and contraction, the

arrangement being such as to permit of ready L assemblage, and to afford ease of replace- ]0 ment and repair.

My invention also contemplates the provision of n'ieaus cooperating to support the bricks of the courses in place to prevent the bricks :lrom separating or opening up gaps.

The foregoing, together with such other objects as may hereinafter appear, or are incident to my invention I obtainby means of a construction the preferred embodiments of which I have illustrated in the accompanying drawings wherein:

Fig. 1 is a 'l'J'agment-ary cross section through a furnace having an arch embody- 7 ing my improvements, said section being taken on the line 1-1 of Fig. 2; Fig. 2 is a .longitudinal section taken on the line 22 of Fig. 1.

Referring now to the drawings, it will be seen that the arch, indicated as a whole by r the reference letter A, is composed of a plurality of courses of brick, the courses marked It being composed of one form of brick, and the courses marked 7) being composed of anther form of brick adapted to be supported by the bricks of the courses a.

The courses a are composed of what may be termed double brick7 arranged in pairs. Each of the bricks 7 has a recess 8 or cut away portion, formed partly in the upper face and partly in the inner vertical face, so that when a pair of such bricks are assembled with their inner faces in abutment, a

T-shaped slot will be formed therebetween.

The outer faces of the brick 7 are formed so as to provide the shoulders 9. The bricks 10, of which the courses b are com osed, are substantially T shaped so as to t between the courses a, the shoulders 9 of the latter serving to support-the bricks 10.

The double bricks constituting the courses a are supported inLthe following manner. A T-shaped carrying brick 11. fits the recesses 8 1n a pair of the bricks 7 and serves to interlock each pair. The carrying bricks 11 for a course are preferably cemented together so as to in effect constitute a single CONSTRUCTION.

1922. Serial N0. 562,640.

carrying member for the course. These carrying bricks are also provided with a head 12 about which the clips 13 of the hangers 14 are adapted to be clamped. Interposed between the clips 13 and the head 12,1 may also provide longitudinallyextending stringer members 15, preferably composed of metal, bent to shape to embrace the heads 12. These stringer members 15 also serve to form the carrying bricks 11 into a substantially con-' 'tinuous carrying inember. The hangers 14 are supported from a beam 16 suitably carried in the walls of the furnace.

-It will be seen from the foregoing that the arrangement provides an economical, simple and eli'ective means for supporting the arch and permits the arch to freely expand an' contract. The bricks may also be readily assembled in place and the whole arch may be replaced easily or 1f necessary repairs can also be easily made by removing broken or damaged bricks and substituting others in place thereof. In this connection one or more of the bricks 10 can be readily removed without disturbing others, making it possible to remove any of the bricks 7.

To prevent the opening up of gaps in the arch, I prefer to provide a yielding means engagingthe ends of the courses-of bricks, and adapted to press the bricks of the course together. This means comprises the bricks 17 and the compression members 18, the compression members being socketed in the respective bricks 17 and end brick of a course. This arrangement, it will be observed, is such as to produce an inward pressure on the ends of a course. As the arch expands, the bricks 17 will beforced upwardly and as the arch contracts the Wei ht of such bricks will cause them to follow pressureot' the members 18.

The joint between the arch and the furnace walls is filled with a sand'seal 23 which permits the arch to freely expand and pontract.

I claim:

ownward, maintaining the In furnace arch construction, azrow of bricks, suspenslon means therefor and compression means at an end of the row, said compression means comprising a weight and ENOCH P. STEVENS. 

